/Engine/Source/Runtime/Interchange/Engine/Public/InterchangeManager.h
Assets are only made available once they have been completely imported (passed through the entire import pipeline) While the status isn'tEStatus::Done, the list can grow between subsequent calls. FAssetImportResult holds a reference to the assets so that they aren't garbage collected.
const [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > & GetImportedObjects() const